Liquefied 1-Butene (Butylene-1)
Liquefied 1-butene is a petroleum-derived gaseous hydrocarbon with the formula C4H8, classified under HTS 2711.14.00.30 as butylene due to its butylene chemical structure. It is commonly used as a monomer in the production of polyethylene and other polymers.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If greater than 95% pure and not liquefied for fuel use
Highly pure acyclic hydrocarbons like 1-butene classified as chemical products in Chapter 29 when not treated as petroleum gases.
If primarily butadiene content exceeds butylene
Mixtures dominated by butadiene fall under the specific butadiene subheading rather than butylene.
If imported as prepared polymer feedstock additive
Chemical preparations containing butylene as an additive may classify under mixtures rather than pure gaseous hydrocarbons.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify purity and composition via ISO 3405 distillation tests to confirm >50% butylene content for classification
• Obtain Material Safety Data Sheets (MSDS) and ensure cryogenic storage compliance during transport
• Avoid misclassification as propane/butanes (2711.13) by providing detailed hydrocarbon analysis certificates
Related Products under HTS 2711.14.00.30
Liquefied Isobutylene (2-Methylpropene)
Liquefied isobutylene, also known as 2-methylpropene, is a branched C4 olefin gaseous hydrocarbon liquefied under pressure, falling under HTS 2711.14.00.30 as butylene. It serves as a key intermediate in producing methacrylic acid, butyl rubber, and fuels.
Liquefied n-Butene (cis/trans-2-Butene Mix)
Liquefied n-butene, primarily a mixture of cis- and trans-2-butene isomers, is a straight-chain butylene gas classified under HTS 2711.14.00.30. It is utilized in the synthesis of maleic anhydride and as a fuel gas component.
Liquefied Raffinate-2 Butylene Stream
Liquefied raffinate-2 is a refinery stream containing 70-90% butylene (mixed isomers) after butadiene extraction, classified as butylene under HTS 2711.14.00.30. Primarily used in gasoline blending and alkylation processes.
Polymer-Grade Liquefied Butylene (C4 Olefin Mix)
Polymer-grade liquefied butylene is a high-purity C4 olefin mixture (85%+ total butylene isomers) for polyethylene co-monomer use, falling under HTS 2711.14.00.30. Specifications ensure low impurities for resin production.